Diodes Incorporated PI5PD2065UEEX

Overview

PI5PD2065UEEX from Diodes Incorporated is a 70mΩ high-side N-channel MOSFET power-distribution switch designed for USB 5V rail control in host and self-powered hub applications. It delivers 1.5A continuous current, features accurate 2.3A typical over-current limiting, thermal shutdown at 135°C, reverse current blocking, and operates across 2.7V–5.5V input range with 0.6ms typical rise time.

For engineers reviewing the PI5PD2065UEEX datasheet, PI5PD2065UEEX pinout, PI5PD2065UEEX application, or PI5PD2065UEEX equivalent, key selection criteria include its active-high enable logic (vs. PI5PD2061's active-low), SOIC-8/EP-MSOP-8 package compatibility, /OC open-drain fault reporting, and compliance with USB voltage-drop and hot-plug requirements.

Technical Context

This device integrates a charge-pump gate driver to fully enhance the internal N-channel MOSFET, enabling low R_DS(on) (70mΩ @ 5V) without requiring external bias. Its constant-current limiting engages at 2.3A (typ.), with deglitched /OC assertion after 14ms delay during over-current events - ensuring immunity to transient surges.

The thermal protection circuit responds exclusively to over-current-induced heating (not ambient), shutting down at 135°C with 10°C hysteresis and automatic recovery. Under-voltage lockout disables the switch below ~2V on IN, while standby supply current remains ≤0.2μA over –40°C to +125°C junction temperature.

Key Specifications

Pinout & Package

PI5PD2065UEEX is packaged in SOIC-8 (lead-free, RoHS-compliant) with exposed pad for enhanced thermal performance. Pin numbering follows standard top-view orientation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side current-limited power switch applications.

Compared with TUSB2036IRHBR and TPS2051BDBVR, PI5PD2065UEEX uniquely combines active-high enable, reverse current blocking, deglitched /OC, and USB-optimized R_DS(on) - making it optimal for discrete, fault-resilient USB power rail control where integration or diode supplementation is undesirable.

Availability

PI5PD2065UEEX is available at Aetrix Electronics and suitable for laptop motherboard designs, USB self-powered hubs, and industrial USB peripheral controllers requiring stable component supply and long-term lifecycle support.

Supply support for PI5PD2065UEEX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and connectivity solutions for computing, consumer, and industrial markets.

PI5PD2065UEEX belongs to Diodes' PI5PD family of USB-compliant power-distribution switches - engineered specifically for robust, low-drop, fault-aware 5V rail control in hot-plug USB host and hub architectures.

FAQ

What is the function of the /OC pin, and how should it be interfaced?

The /OC pin is an open-drain output that pulls low during over-current or thermal shutdown events. It requires an external pull-up resistor (typically 100kΩ to VCC) to generate a valid logic-high when idle. The 14ms deglitch ensures only sustained faults trigger reporting, reducing false interrupts from inrush currents. No internal pull-up exists, so omission of the external resistor will leave /OC floating and non-functional.

Does PI5PD2065UEEX support reverse current blocking when disabled?

Yes - the internal N-channel MOSFET architecture and integrated body-diode control circuitry actively block reverse current flow from OUT to IN when the device is disabled (EN = low). This prevents backfeeding into upstream sources, a critical requirement for USB On-The-Go (OTG) and dual-role port applications where power direction may reverse.

How does thermal shutdown interact with over-current limiting?

Over-current limiting acts first: when load exceeds 2.3A (typ.), the device enters constant-current mode to clamp output. If this condition persists, power dissipation raises junction temperature. At ~135°C, thermal shutdown overrides current limiting and forces the switch OFF. Recovery occurs automatically once junction cools to ~125°C, and the device resumes normal operation if the fault is cleared.

Can PI5PD2065UEEX operate from a 3.3V input supply?

No - the minimum operating input voltage is 2.7V, but the device requires ≥2.7V on IN to ensure proper charge-pump operation and MOSFET gate drive. At 3.3V, R_DS(on) increases to 75mΩ (typ.), still within USB voltage-drop limits. However, 3.3V is insufficient to power downstream 5V USB peripherals directly; it must be used only as a control rail for switched 5V distribution, not as the output source.